Copper-aluminum composite technology, foreign counterparts have not yet done, Xingrong Hi-tech experts have done it. Yin Guomao, the only academician in the pipe industry of the Chinese Academy of Engineering, spoke highly of the new high-efficiency heat transfer tube developed by Jiangsu Xingrong Hi-Tech Co., Ltd.—copper-aluminum composite pipe. He said that if national air conditioner manufacturers are fully adopted, they can save more than 2 billion kilowatt-hours of energy for the country each year, and save more than 8 billion yuan for air-conditioning companies. "This is the first world-wide original in China's metal pipe industry." .
This new technology was approved by experts on June 10 in Changzhou National High-tech Zone. After the actual installation of more than 10,000 air conditioners by several famous air conditioner manufacturers, the copper-aluminum composite pipe (ACC pipe) independently developed by Jiangsu Xingrong High-tech Co., Ltd. successfully achieved the metallurgy between copper and aluminum. Combined, the single-tube "energy efficiency ratio" is 39.2% higher than that of the original copper pipe. In practical applications, the "energy efficiency ratio" is also increased by more than 5%, and copper consumption is reduced by 80%. The technical level of the project has reached the international advanced and leading level. After the scaled production of products, it can replace imports and expand exports. According to estimates by experts, the annual air-conditioning power consumption in the country is above 40 billion kilowatt-hours. If all of this technology is adopted, the copper consumption will be greatly reduced. Each air-conditioner will therefore reduce the cost by about RMB 120 to RMB 150. In 2006, China’s air-conditioning output would be 5,500. Millions of calculations, air-conditioning companies will therefore reduce costs by more than 8 billion yuan.
The nine academicians and experts from the Chinese Academy of Engineering, the China Non-Ferrous Metals Processing Industry Association, and the Beijing Non-Ferrous Metal Research Institute recognized that this is a world-first new technology. The copper-aluminum composite new technology has realized copper. The aluminum interface atomic diffusion metallurgical combination solves a series of technical problems caused by the traditional composite technology and obtains a truly integrated copper-aluminum composite pipe. This is a major breakthrough in the metal composite technology in the world today, filling in the composite technology of metal materials. A blank. The product is not only in the air-conditioning, refrigeration industry, but also in energy development (thermal power, nuclear power), petrochemical, electronics, cable, building water pipe and environmental protection and other aspects of the very great value of the promotion. The technology has been granted an invention patent, applied for four patents and applied for national PCT patents.
At present, the most commonly used heat exchange materials in the world are copper and aluminum alloys. Aluminum alloys are easy to process, low cost, and are the most widely used materials. In contrast, the instantaneous heat absorption capacity of copper is better than that of aluminum alloys, but the heat dissipation rate is slower than that of aluminum alloys. As the combination of copper and aluminum is relatively difficult, and the affinity between copper and aluminum is poor, the application of copper-aluminum composite materials to heat dissipation technology has been considered by the industry as impossible. Under the leadership of Chief Engineer Tian Fusheng, Xing Rong’s R&D group used its own patented technology to successfully realize the metallurgical combination of copper and aluminum atoms, which perfectly combined the advantages of the two metals—the instantaneous heat absorption of copper. The capacity is 1.6 times better than that of aluminum alloys, and the heat dissipation rate of aluminum alloys is 2.33 times faster than that of copper. The combination of the two is equivalent to adding a layer of water cooling to the thin copper. After testing, this new type of high-efficiency heat exchange tube—copper-aluminum composite tube, single tube heat exchange performance can be increased by 39.2%, and can be widely used in air conditioning evaporators and condensers, refrigerator condensers and evaporators, refrigerator connecting tubes , Central air conditioning, fan coil, solar hot water pipes, radiators for heating, copper water pipes, etc. The relatively pure copper tube has the characteristics of light weight, anti-leakage, low manufacturing cost, high vibration resistance, high fatigue resistance, and no heat reduction effect.
Experts pointed out that the current air-conditioning power consumption has accounted for a large proportion of China's electric power load, about 15%, about 30% at peak load, air-conditioning power consumption in summer in Shanghai, Beijing and other places even occupies more than 40% of electric load. Therefore, the issue of air-conditioning energy-saving is imminent, and the promotion of this copper-aluminum composite pipe and other energy-saving products, the air conditioning industry has no responsibility. Saving copper resources is also a strength of this copper-aluminum composite pipe. Since 2005, copper prices in the international market have continued to rise from less than 30,000 yuan/ton, once soaring to 8.5 yuan/ton, which has exerted enormous pressure on the production costs of air-conditioning companies whose profits have been very thin. According to the head of the new Air Conditioning Division, taking 1.5 air conditioners as an example, it takes about 6 to 7 kg of copper. China is currently the world's largest air conditioner producer. In 2006, China produced 55 million units of air conditioners, which accounted for about 70% of the world's total production. The amount of copper used is extremely huge, and copper-aluminum composite pipes can save 80% of copper. Its economic and social benefits are considerable.